PSU needed - Help?

[mattyy]

I need a decent PSU for my new build, it will consist of the following :

ASUS P5Q Pro
E8400
4GB Coursair XMS2 800mhz
2 500gb HDDs
1 Optical DVD RW
HD 4780 or similar.

I would like to overclock a little bit so can someone suggest a decent PSU.
I would like it to have as many SATA connectors as possible.

I have pick out this one (Coolermaster 460W eXtreme Power Plus PSU - 20+4pin 4+4 ATX12v 4x SATA 6pin PCI-E)
Will 460W be enough?

Thanks

 

[mattyy]

think il go for that one then! Thanks guys!